1<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>intel_aux_display_runtime_get</title><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"><link rel="home" href="index.html" title="Linux DRM Developer's Guide"><link rel="up" href="drmI915.html#idp1127683628" title="Runtime Power Management"><link rel="prev" href="API-intel-power-domains-init-hw.html" title="intel_power_domains_init_hw"><link rel="next" href="API-intel-aux-display-runtime-put.html" title="intel_aux_display_runtime_put"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span class="phrase">intel_aux_display_runtime_get</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-intel-power-domains-init-hw.html">Prev</a>&#160;</td><th width="60%" align="center">Runtime Power Management</th><td width="20%" align="right">&#160;<a accesskey="n" href="API-intel-aux-display-runtime-put.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="API-intel-aux-display-runtime-get"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>intel_aux_display_runtime_get &#8212; 
2     grab an auxiliary power domain reference
3 </p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><div class="funcsynopsis"><table border="0" class="funcprototype-table" summary="Function synopsis" style="cellspacing: 0; cellpadding: 0;"><tr><td><code class="funcdef">void <b class="fsfunc">intel_aux_display_runtime_get </b>(</code></td><td>struct drm_i915_private * <var class="pdparam">dev_priv</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer">&#160;</div></div></div><div class="refsect1"><a name="idp1127759764"></a><h2>Arguments</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="parameter"><code>dev_priv</code></em></span></dt><dd><p>
4     i915 device instance
5    </p></dd></dl></div></div><div class="refsect1"><a name="idp1127761380"></a><h2>Description</h2><p>
6   This function grabs a power domain reference for the auxiliary power domain
7   (for access to the GMBUS and DP AUX blocks) and ensures that it and all its
8   parents are powered up. Therefore users should only grab a reference to the
9   innermost power domain they need.
10   </p><p>
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12   Any power domain reference obtained by this function must have a symmetric
13   call to <code class="function">intel_aux_display_runtime_put</code> to release the reference again.
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